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Effect of Prevailing Temperature on Grain Growth of Chickpea at Different Sowing Dates

F. Ahmed
SSO
Agronomy Division, Gazipur

M.N. Islam
PSO
Agronomy Division, Gazipur

Abstract/ Executive Summary:

A field experiment was conducted to evaluate grain growth and yield of chickpea in prevailing temperature at different sowing dates (November 10, November 20, November 30, December 10, December 20 and December 30). Sowing dates showed great influence on grain growth of chickpea. Grain growth of November sown chickpea was higher than that of December sowing. Growth duration and dry matter production of chickpea decreased with delayed sowing due to temperature rise at latter growth stage, which reduce growth duration as well as yield of chickpea. Significantly highest grain yield was recorded in November 20 sowing followed by November 10 sowing and the lowest in December 30 sowing. Beyond November 20 sowing, yield reduction ranged from 17 to 41%.

Keywords: Prevailing temperature, Grain growth, Chickpea, Sowing dates

Location: BARI, Joydebpur, Gazipur

Start Date: 00-00-2008

End Date: 00-00-2009

Program Area: Crop-Soil-Water Management

Commodity: Chickpea

Objectives:

1. To evaluate grain growth pattern under different prevailing temperature

2. To quantify the yield loss due to variation in temperature resulting from sowing dates variations.

Methodology:

The experiment was conducted at the Farm of Central Research Station of Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur during rabi season of 2008-2009. The soil belongs to the Chhiata Series under Agro-Ecological Zone-28 (AEZ-28). The soil was slightly clay loam and acidic in nature (pH 6.1). Six sowing dates viz. November 10, November 20, November 30, December 10, December 20 and December 30 were used as sowing time to evaluate prevailing temperature effect on grain growth and yield of chickpea. The unit plot size was 3.6 m x 3 m. Seeds of chickpea (BARI Chola- 5) were sown according to treatments. Fertilizers were applied at the rate of 12-22-25-10 kg/ha N, P, K and S as urea, triple super phosphate (TSP), muriate of potash (MP) and gypsum. All fertilizers were used as basal. For grain growth 10 pods were sampled at different treatments at 5 days interval. Seeds were separated from husk and dried in oven for 3 days at 70⁰C and grain growth was calculated. For dry matter at harvest 5 plants were sampled and dried component-wise in an oven at 70⁰C for 72 hours. November 10, 20 and 30 sowings were harvested at 132, 125 and 120 DAS. December 10, 20 and 30 sowings were harvested at 109, 99 and 99 DAS. The yield component data was collected from 10 randomly selected plants prior to harvest from each plot. At harvest, the yield data was recorded plot wise and analyzed statistically.

Source of Information: Annual Report, Agronomy Division, 2008-2009

Article Link (Online Journal):

Funding Source:

1. Asian Development Bank

Budget: 15,000/-

Total Budget (Tk.) : 15,000/-

Achievement/Findings:

Results revealed that high temperature at reproductive stage due to delayed sowing enhanced grain growth with reduced grain filling period and gave poor yield. November 20 sowing performed better than early sowing (Nov.10) as well as delayed sowing (December sowings). Beyond November 20 sowing, yield reduction ranged from 17 to 41%.

Knowledge Management: Report/Proceedings